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O. GRAVE FILING Filed June 22, 1935 OTTO flaw E Patented June 9,1936

UNITED STATES PATENT OFFICE Application June 22,

1935, Serial No. 27,979

Germany July 31, 1938 1 Claim.

when it is desired 'to drive double sheet-piling or box-piling consisting of I-shaped or double -T-shaped piles with connected flanges to form two spaced continuous walls, in other than recti-.

linear arrangement, 1. e. in curved lines, it is always necessary to provide a number of separate adaptor piles which can be driven to form with the adjacent double-T piles a polygon corresponding as closely as possible to the desired curved configuration. However when driving such sheet piling in rectilinear alignment it frequently occurs that great dimeulties arise when it is desired to revert to the correct alignment after deviating' therefrom due to serious obstacles ensheet piling or simple T-iron piles or double-T- iron plies with flange connecting means at -one side only these dimculties do not arise. 0n the other hand however when driving double sheet piling consisting of double-T or I-iron piles it is necessary to utilize adaptor piles, more particularly at the curved portions.

The object of the present invention is to avoid these difliculties and to eliminate the use of adaptor piles.

According to the invention, in piles of I-shaped cross section with flanges terminating in connecting elements such as protuberances, claws and the like, the flanges are of diiferent extent at the opposite ends. when driving rectilinear walls,

these piles are so arranged that a wide flange is followed by a narrow flange. Thus, in this case, thefla-nges oidiflerent extentofadiacentpiles are connected together. When it is desired to drive a 35 curvilinear wall, then the equal flanges of adjacent piles are connected together. In this way it is possible to drive rectilinear and curvilinear walls with only one kind of pile and without the use of adaptor piles. Further after deviating from alignment it is readily possible to return to the original alignment. 7

In order that the invention may be more readily understood reference will now be made to the accompanying drawing which shows examples of the practical application thereof,

Fig. 1 showing rectilinearly disposed box-piling, Fig. 2 curvilinearly arranged box-piling and Fig. 3 combined rectilinear and curvilinear boxpiling for avoiding an obstacle.

The piles are provided at one end with wide countered in the earth. In the case of single flanges 2 and at the opposite end with narrow flanges 3. Connecting means 4 embrace the edges of the flanges which terminate in enlarged portions 5. The direction in which the box-piling is being built up is indicated by 8.

If the box-piling is to be driven in rectilinear arrangement thenthe double-T or I-shaped piles are positioned with alternate wide and narrow flanges connected together as shown in Fig. 1.

If the piling is to be driven in curvilinear form then as shown in Fig. 2 the piles are positioned with a preponderance connected at their identical flanges.

If as shown in Fig. 3 it is necessary to avoid an obstacle 1: then a suiflclent number of piles are positioned with identical flanges adjacent one another to form a wall passing round the obstacle.

At the connecting means the piles have a certain play which facilitates the assembly in forming curvilinear walls and in avoiding obstacles.

What I claim is:

A metal piling structure comprising, in combination, one-piece H-shaped-rolled metal sections having substantially parallel faced flanges, one of said flanges being of a materially greater width than the other flange, said sections being arranged side by side with the longitudinal edges of their flanges adjacent each other, said flanges having their outer faces only materially thickened for a relatively short distance from their longitudinal edges toward the webs of said sections to form locking ribs, and one-piece substantially H-shaped rolled metal connecting bars having a dimensionin a direction parallel with the flanges of said sections substantially coextensive with said locking ribs and constructed and arranged so that their flanges embrace both the inner and outer faces of the flanges of said sections and interlock with said locking ribs, whereby. said H-shaped rolled metal sections may be arranged in series with the narrow flange of one section adjacent the wide flange of the next section to form a straight line piling structure or with the narrow and wide flanges of one section adjacent similar flanges of the next section to form a piling structure disposed on an angle or curve as desired.

OTTO GRAVE. 

